Practical dechlorination of PVDC containing films
This study investigates recycling methods for processing PVDC coated plastic films, removing chlorine from the plastic surface. Experiments were conducted where the Cl content of PVDC-coated plastic film was reduced via hydrothermal dechlorination using several different reagents: NaOH, NH4OH, Na...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
Nanyang Technological University
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/140583 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | This study investigates recycling methods for processing PVDC coated plastic films,
removing chlorine from the plastic surface. Experiments were conducted where the
Cl content of PVDC-coated plastic film was reduced via hydrothermal dechlorination
using several different reagents: NaOH, NH4OH, Na2CO3, KMnO4 and HMPA. The
treated film was tested with FTIR and DSC for qualitative analysis of their
effectiveness in dechlorination and compatibility with recycling processes. Na2Co3
and KMnO4 are proven to be ineffective. NaOH, NH4OH and HMPA were able to
dechlorinate the plastic film. Plastic film that underwent hydrothermal dechlorination
with NaOH and NH4OH appeared to be suitable for mechanical recycling and
thermal depolymerisation via pyrolysis, whereas the film reacted with HMPA would
only be suitable for thermal depolymerisation. These results suggest that chlorinated
MPW could be made suitable for recycling via simple hydrothermal reactions with
bases like NaOH and NH4OH. |
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